mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 08:14:15 +08:00
589e5cab17
Including:
- Intel VT-d:
- PASID leakage in intel_svm_unbind_mm();
- Deadlock in intel_svm_drain_prq().
- AMD IOMMU: Fixes for an unhandled page-fault bug when AVIC is used
for a KVM guest.
- Make CONFIG_IOMMU_DEFAULT_DMA_LAZY architecture instead of IOMMU
driver dependent
-----BEGIN PGP SIGNATURE-----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=/POW
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v5.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Intel VT-d:
- PASID leakage in intel_svm_unbind_mm()
- Deadlock in intel_svm_drain_prq()
- AMD IOMMU: Fixes for an unhandled page-fault bug when AVIC is used
for a KVM guest.
- Make CONFIG_IOMMU_DEFAULT_DMA_LAZY architecture instead of IOMMU
driver dependent
* tag 'iommu-fixes-v5.15-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Clarify default domain Kconfig
iommu/vt-d: Fix a deadlock in intel_svm_drain_prq()
iommu/vt-d: Fix PASID leak in intel_svm_unbind_mm()
iommu/amd: Remove iommu_init_ga()
iommu/amd: Relocate GAMSup check to early_enable_iommus
483 lines
15 KiB
Plaintext
483 lines
15 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
|
|
# The IOVA library may also be used by non-IOMMU_API users
|
|
config IOMMU_IOVA
|
|
tristate
|
|
|
|
# The IOASID library may also be used by non-IOMMU_API users
|
|
config IOASID
|
|
tristate
|
|
|
|
# IOMMU_API always gets selected by whoever wants it.
|
|
config IOMMU_API
|
|
bool
|
|
|
|
menuconfig IOMMU_SUPPORT
|
|
bool "IOMMU Hardware Support"
|
|
depends on MMU
|
|
default y
|
|
help
|
|
Say Y here if you want to compile device drivers for IO Memory
|
|
Management Units into the kernel. These devices usually allow to
|
|
remap DMA requests and/or remap interrupts from other devices on the
|
|
system.
|
|
|
|
if IOMMU_SUPPORT
|
|
|
|
menu "Generic IOMMU Pagetable Support"
|
|
|
|
# Selected by the actual pagetable implementations
|
|
config IOMMU_IO_PGTABLE
|
|
bool
|
|
|
|
config IOMMU_IO_PGTABLE_LPAE
|
|
bool "ARMv7/v8 Long Descriptor Format"
|
|
select IOMMU_IO_PGTABLE
|
|
depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
|
|
help
|
|
Enable support for the ARM long descriptor pagetable format.
|
|
This allocator supports 4K/2M/1G, 16K/32M and 64K/512M page
|
|
sizes at both stage-1 and stage-2, as well as address spaces
|
|
up to 48-bits in size.
|
|
|
|
config IOMMU_IO_PGTABLE_LPAE_SELFTEST
|
|
bool "LPAE selftests"
|
|
depends on IOMMU_IO_PGTABLE_LPAE
|
|
help
|
|
Enable self-tests for LPAE page table allocator. This performs
|
|
a series of page-table consistency checks during boot.
|
|
|
|
If unsure, say N here.
|
|
|
|
config IOMMU_IO_PGTABLE_ARMV7S
|
|
bool "ARMv7/v8 Short Descriptor Format"
|
|
select IOMMU_IO_PGTABLE
|
|
depends on ARM || ARM64 || COMPILE_TEST
|
|
help
|
|
Enable support for the ARM Short-descriptor pagetable format.
|
|
This supports 32-bit virtual and physical addresses mapped using
|
|
2-level tables with 4KB pages/1MB sections, and contiguous entries
|
|
for 64KB pages/16MB supersections if indicated by the IOMMU driver.
|
|
|
|
config IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
|
|
bool "ARMv7s selftests"
|
|
depends on IOMMU_IO_PGTABLE_ARMV7S
|
|
help
|
|
Enable self-tests for ARMv7s page table allocator. This performs
|
|
a series of page-table consistency checks during boot.
|
|
|
|
If unsure, say N here.
|
|
|
|
endmenu
|
|
|
|
config IOMMU_DEBUGFS
|
|
bool "Export IOMMU internals in DebugFS"
|
|
depends on DEBUG_FS
|
|
help
|
|
Allows exposure of IOMMU device internals. This option enables
|
|
the use of debugfs by IOMMU drivers as required. Devices can,
|
|
at initialization time, cause the IOMMU code to create a top-level
|
|
debug/iommu directory, and then populate a subdirectory with
|
|
entries as required.
|
|
|
|
choice
|
|
prompt "IOMMU default domain type"
|
|
depends on IOMMU_API
|
|
default IOMMU_DEFAULT_DMA_LAZY if X86 || IA64
|
|
default IOMMU_DEFAULT_DMA_STRICT
|
|
help
|
|
Choose the type of IOMMU domain used to manage DMA API usage by
|
|
device drivers. The options here typically represent different
|
|
levels of tradeoff between robustness/security and performance,
|
|
depending on the IOMMU driver. Not all IOMMUs support all options.
|
|
This choice can be overridden at boot via the command line, and for
|
|
some devices also at runtime via sysfs.
|
|
|
|
If unsure, keep the default.
|
|
|
|
config IOMMU_DEFAULT_DMA_STRICT
|
|
bool "Translated - Strict"
|
|
help
|
|
Trusted devices use translation to restrict their access to only
|
|
DMA-mapped pages, with strict TLB invalidation on unmap. Equivalent
|
|
to passing "iommu.passthrough=0 iommu.strict=1" on the command line.
|
|
|
|
Untrusted devices always use this mode, with an additional layer of
|
|
bounce-buffering such that they cannot gain access to any unrelated
|
|
data within a mapped page.
|
|
|
|
config IOMMU_DEFAULT_DMA_LAZY
|
|
bool "Translated - Lazy"
|
|
help
|
|
Trusted devices use translation to restrict their access to only
|
|
DMA-mapped pages, but with "lazy" batched TLB invalidation. This
|
|
mode allows higher performance with some IOMMUs due to reduced TLB
|
|
flushing, but at the cost of reduced isolation since devices may be
|
|
able to access memory for some time after it has been unmapped.
|
|
Equivalent to passing "iommu.passthrough=0 iommu.strict=0" on the
|
|
command line.
|
|
|
|
If this mode is not supported by the IOMMU driver, the effective
|
|
runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT.
|
|
|
|
config IOMMU_DEFAULT_PASSTHROUGH
|
|
bool "Passthrough"
|
|
help
|
|
Trusted devices are identity-mapped, giving them unrestricted access
|
|
to memory with minimal performance overhead. Equivalent to passing
|
|
"iommu.passthrough=1" (historically "iommu=pt") on the command line.
|
|
|
|
If this mode is not supported by the IOMMU driver, the effective
|
|
runtime default will fall back to IOMMU_DEFAULT_DMA_STRICT.
|
|
|
|
endchoice
|
|
|
|
config OF_IOMMU
|
|
def_bool y
|
|
depends on OF && IOMMU_API
|
|
|
|
# IOMMU-agnostic DMA-mapping layer
|
|
config IOMMU_DMA
|
|
bool
|
|
select DMA_OPS
|
|
select IOMMU_API
|
|
select IOMMU_IOVA
|
|
select IRQ_MSI_IOMMU
|
|
select NEED_SG_DMA_LENGTH
|
|
|
|
# Shared Virtual Addressing library
|
|
config IOMMU_SVA_LIB
|
|
bool
|
|
select IOASID
|
|
|
|
config FSL_PAMU
|
|
bool "Freescale IOMMU support"
|
|
depends on PCI
|
|
depends on PHYS_64BIT
|
|
depends on PPC_E500MC || (COMPILE_TEST && PPC)
|
|
select IOMMU_API
|
|
select GENERIC_ALLOCATOR
|
|
help
|
|
Freescale PAMU support. PAMU is the IOMMU present on Freescale QorIQ platforms.
|
|
PAMU can authorize memory access, remap the memory address, and remap I/O
|
|
transaction types.
|
|
|
|
# MSM IOMMU support
|
|
config MSM_IOMMU
|
|
bool "MSM IOMMU Support"
|
|
depends on ARM
|
|
depends on ARCH_MSM8X60 || ARCH_MSM8960 || COMPILE_TEST
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_ARMV7S
|
|
help
|
|
Support for the IOMMUs found on certain Qualcomm SOCs.
|
|
These IOMMUs allow virtualization of the address space used by most
|
|
cores within the multimedia subsystem.
|
|
|
|
If unsure, say N here.
|
|
|
|
source "drivers/iommu/amd/Kconfig"
|
|
source "drivers/iommu/intel/Kconfig"
|
|
|
|
config IRQ_REMAP
|
|
bool "Support for Interrupt Remapping"
|
|
depends on X86_64 && X86_IO_APIC && PCI_MSI && ACPI
|
|
select DMAR_TABLE
|
|
help
|
|
Supports Interrupt remapping for IO-APIC and MSI devices.
|
|
To use x2apic mode in the CPU's which support x2APIC enhancements or
|
|
to support platforms with CPU's having > 8 bit APIC ID, say Y.
|
|
|
|
# OMAP IOMMU support
|
|
config OMAP_IOMMU
|
|
bool "OMAP IOMMU Support"
|
|
depends on ARCH_OMAP2PLUS || COMPILE_TEST
|
|
select IOMMU_API
|
|
help
|
|
The OMAP3 media platform drivers depend on iommu support,
|
|
if you need them say Y here.
|
|
|
|
config OMAP_IOMMU_DEBUG
|
|
bool "Export OMAP IOMMU internals in DebugFS"
|
|
depends on OMAP_IOMMU && DEBUG_FS
|
|
help
|
|
Select this to see extensive information about
|
|
the internal state of OMAP IOMMU in debugfs.
|
|
|
|
Say N unless you know you need this.
|
|
|
|
config ROCKCHIP_IOMMU
|
|
bool "Rockchip IOMMU Support"
|
|
depends on ARCH_ROCKCHIP || COMPILE_TEST
|
|
select IOMMU_API
|
|
select ARM_DMA_USE_IOMMU
|
|
help
|
|
Support for IOMMUs found on Rockchip rk32xx SOCs.
|
|
These IOMMUs allow virtualization of the address space used by most
|
|
cores within the multimedia subsystem.
|
|
Say Y here if you are using a Rockchip SoC that includes an IOMMU
|
|
device.
|
|
|
|
config SUN50I_IOMMU
|
|
bool "Allwinner H6 IOMMU Support"
|
|
depends on HAS_DMA
|
|
depends on ARCH_SUNXI || COMPILE_TEST
|
|
select ARM_DMA_USE_IOMMU
|
|
select IOMMU_API
|
|
help
|
|
Support for the IOMMU introduced in the Allwinner H6 SoCs.
|
|
|
|
config TEGRA_IOMMU_GART
|
|
bool "Tegra GART IOMMU Support"
|
|
depends on ARCH_TEGRA_2x_SOC
|
|
depends on TEGRA_MC
|
|
select IOMMU_API
|
|
help
|
|
Enables support for remapping discontiguous physical memory
|
|
shared with the operating system into contiguous I/O virtual
|
|
space through the GART (Graphics Address Relocation Table)
|
|
hardware included on Tegra SoCs.
|
|
|
|
config TEGRA_IOMMU_SMMU
|
|
bool "NVIDIA Tegra SMMU Support"
|
|
depends on ARCH_TEGRA
|
|
depends on TEGRA_AHB
|
|
depends on TEGRA_MC
|
|
select IOMMU_API
|
|
help
|
|
This driver supports the IOMMU hardware (SMMU) found on NVIDIA Tegra
|
|
SoCs (Tegra30 up to Tegra210).
|
|
|
|
config EXYNOS_IOMMU
|
|
bool "Exynos IOMMU Support"
|
|
depends on ARCH_EXYNOS || COMPILE_TEST
|
|
depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes
|
|
select IOMMU_API
|
|
select ARM_DMA_USE_IOMMU
|
|
help
|
|
Support for the IOMMU (System MMU) of Samsung Exynos application
|
|
processor family. This enables H/W multimedia accelerators to see
|
|
non-linear physical memory chunks as linear memory in their
|
|
address space.
|
|
|
|
If unsure, say N here.
|
|
|
|
config EXYNOS_IOMMU_DEBUG
|
|
bool "Debugging log for Exynos IOMMU"
|
|
depends on EXYNOS_IOMMU
|
|
help
|
|
Select this to see the detailed log message that shows what
|
|
happens in the IOMMU driver.
|
|
|
|
Say N unless you need kernel log message for IOMMU debugging.
|
|
|
|
config IPMMU_VMSA
|
|
bool "Renesas VMSA-compatible IPMMU"
|
|
depends on ARCH_RENESAS || (COMPILE_TEST && !GENERIC_ATOMIC64)
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_LPAE
|
|
select ARM_DMA_USE_IOMMU
|
|
help
|
|
Support for the Renesas VMSA-compatible IPMMU found in the R-Mobile
|
|
APE6, R-Car Gen{2,3} and RZ/G{1,2} SoCs.
|
|
|
|
If unsure, say N.
|
|
|
|
config SPAPR_TCE_IOMMU
|
|
bool "sPAPR TCE IOMMU Support"
|
|
depends on PPC_POWERNV || PPC_PSERIES
|
|
select IOMMU_API
|
|
help
|
|
Enables bits of IOMMU API required by VFIO. The iommu_ops
|
|
is not implemented as it is not necessary for VFIO.
|
|
|
|
config APPLE_DART
|
|
tristate "Apple DART IOMMU Support"
|
|
depends on ARCH_APPLE || (COMPILE_TEST && !GENERIC_ATOMIC64)
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_LPAE
|
|
default ARCH_APPLE
|
|
help
|
|
Support for Apple DART (Device Address Resolution Table) IOMMUs
|
|
found in Apple ARM SoCs like the M1.
|
|
This IOMMU is required for most peripherals using DMA to access
|
|
the main memory.
|
|
|
|
Say Y here if you are using an Apple SoC.
|
|
|
|
# ARM IOMMU support
|
|
config ARM_SMMU
|
|
tristate "ARM Ltd. System MMU (SMMU) Support"
|
|
depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
|
|
depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_LPAE
|
|
select ARM_DMA_USE_IOMMU if ARM
|
|
help
|
|
Support for implementations of the ARM System MMU architecture
|
|
versions 1 and 2.
|
|
|
|
Say Y here if your SoC includes an IOMMU device implementing
|
|
the ARM SMMU architecture.
|
|
|
|
config ARM_SMMU_LEGACY_DT_BINDINGS
|
|
bool "Support the legacy \"mmu-masters\" devicetree bindings"
|
|
depends on ARM_SMMU=y && OF
|
|
help
|
|
Support for the badly designed and deprecated "mmu-masters"
|
|
devicetree bindings. This allows some DMA masters to attach
|
|
to the SMMU but does not provide any support via the DMA API.
|
|
If you're lucky, you might be able to get VFIO up and running.
|
|
|
|
If you say Y here then you'll make me very sad. Instead, say N
|
|
and move your firmware to the utopian future that was 2016.
|
|
|
|
config ARM_SMMU_DISABLE_BYPASS_BY_DEFAULT
|
|
bool "Default to disabling bypass on ARM SMMU v1 and v2"
|
|
depends on ARM_SMMU
|
|
default y
|
|
help
|
|
Say Y here to (by default) disable bypass streams such that
|
|
incoming transactions from devices that are not attached to
|
|
an iommu domain will report an abort back to the device and
|
|
will not be allowed to pass through the SMMU.
|
|
|
|
Any old kernels that existed before this KConfig was
|
|
introduced would default to _allowing_ bypass (AKA the
|
|
equivalent of NO for this config). However the default for
|
|
this option is YES because the old behavior is insecure.
|
|
|
|
There are few reasons to allow unmatched stream bypass, and
|
|
even fewer good ones. If saying YES here breaks your board
|
|
you should work on fixing your board. This KConfig option
|
|
is expected to be removed in the future and we'll simply
|
|
hardcode the bypass disable in the code.
|
|
|
|
NOTE: the kernel command line parameter
|
|
'arm-smmu.disable_bypass' will continue to override this
|
|
config.
|
|
|
|
config ARM_SMMU_V3
|
|
tristate "ARM Ltd. System MMU Version 3 (SMMUv3) Support"
|
|
depends on ARM64
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_LPAE
|
|
select GENERIC_MSI_IRQ_DOMAIN
|
|
help
|
|
Support for implementations of the ARM System MMU architecture
|
|
version 3 providing translation support to a PCIe root complex.
|
|
|
|
Say Y here if your system includes an IOMMU device implementing
|
|
the ARM SMMUv3 architecture.
|
|
|
|
config ARM_SMMU_V3_SVA
|
|
bool "Shared Virtual Addressing support for the ARM SMMUv3"
|
|
depends on ARM_SMMU_V3
|
|
select IOMMU_SVA_LIB
|
|
select MMU_NOTIFIER
|
|
help
|
|
Support for sharing process address spaces with devices using the
|
|
SMMUv3.
|
|
|
|
Say Y here if your system supports SVA extensions such as PCIe PASID
|
|
and PRI.
|
|
|
|
config S390_IOMMU
|
|
def_bool y if S390 && PCI
|
|
depends on S390 && PCI
|
|
select IOMMU_API
|
|
help
|
|
Support for the IOMMU API for s390 PCI devices.
|
|
|
|
config S390_CCW_IOMMU
|
|
bool "S390 CCW IOMMU Support"
|
|
depends on S390 && CCW || COMPILE_TEST
|
|
select IOMMU_API
|
|
help
|
|
Enables bits of IOMMU API required by VFIO. The iommu_ops
|
|
is not implemented as it is not necessary for VFIO.
|
|
|
|
config S390_AP_IOMMU
|
|
bool "S390 AP IOMMU Support"
|
|
depends on S390 && ZCRYPT || COMPILE_TEST
|
|
select IOMMU_API
|
|
help
|
|
Enables bits of IOMMU API required by VFIO. The iommu_ops
|
|
is not implemented as it is not necessary for VFIO.
|
|
|
|
config MTK_IOMMU
|
|
tristate "MediaTek IOMMU Support"
|
|
depends on ARCH_MEDIATEK || COMPILE_TEST
|
|
select ARM_DMA_USE_IOMMU
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_ARMV7S
|
|
select MEMORY
|
|
select MTK_SMI
|
|
help
|
|
Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia
|
|
Memory Management Unit. This option enables remapping of DMA memory
|
|
accesses for the multimedia subsystem.
|
|
|
|
If unsure, say N here.
|
|
|
|
config MTK_IOMMU_V1
|
|
tristate "MediaTek IOMMU Version 1 (M4U gen1) Support"
|
|
depends on ARM
|
|
depends on ARCH_MEDIATEK || COMPILE_TEST
|
|
select ARM_DMA_USE_IOMMU
|
|
select IOMMU_API
|
|
select MEMORY
|
|
select MTK_SMI
|
|
help
|
|
Support for the M4U on certain Mediatek SoCs. M4U generation 1 HW is
|
|
Multimedia Memory Managememt Unit. This option enables remapping of
|
|
DMA memory accesses for the multimedia subsystem.
|
|
|
|
if unsure, say N here.
|
|
|
|
config QCOM_IOMMU
|
|
# Note: iommu drivers cannot (yet?) be built as modules
|
|
bool "Qualcomm IOMMU Support"
|
|
depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64)
|
|
depends on QCOM_SCM=y
|
|
select IOMMU_API
|
|
select IOMMU_IO_PGTABLE_LPAE
|
|
select ARM_DMA_USE_IOMMU
|
|
help
|
|
Support for IOMMU on certain Qualcomm SoCs.
|
|
|
|
config HYPERV_IOMMU
|
|
bool "Hyper-V x2APIC IRQ Handling"
|
|
depends on HYPERV && X86
|
|
select IOMMU_API
|
|
default HYPERV
|
|
help
|
|
Stub IOMMU driver to handle IRQs as to allow Hyper-V Linux
|
|
guests to run with x2APIC mode enabled.
|
|
|
|
config VIRTIO_IOMMU
|
|
tristate "Virtio IOMMU driver"
|
|
depends on VIRTIO
|
|
depends on (ARM64 || X86)
|
|
select IOMMU_API
|
|
select IOMMU_DMA
|
|
select INTERVAL_TREE
|
|
select ACPI_VIOT if ACPI
|
|
help
|
|
Para-virtualised IOMMU driver with virtio.
|
|
|
|
Say Y here if you intend to run this kernel as a guest.
|
|
|
|
config SPRD_IOMMU
|
|
tristate "Unisoc IOMMU Support"
|
|
depends on ARCH_SPRD || COMPILE_TEST
|
|
select IOMMU_API
|
|
help
|
|
Support for IOMMU on Unisoc's SoCs, this IOMMU can be used by
|
|
Unisoc's multimedia devices, such as display, Image codec(jpeg)
|
|
and a few signal processors, including VSP(video), GSP(graphic),
|
|
ISP(image), and CPP(camera pixel processor), etc.
|
|
|
|
Say Y here if you want to use the multimedia devices listed above.
|
|
|
|
endif # IOMMU_SUPPORT
|